Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 26.92 3.69 74.00 88.00 07Mar2018 9 a.m. 33.02 6.64 63.00 275.00 07Mar2018 10 a.m. 37.71 9.12 53.00 537.75 07Mar2018 11 a.m. 41.12 9.32 45.33 686.33 07Mar2018 12 p.m. 44.78 6.99 37.75 803.00 07Mar2018 1 p.m. 48.08 5.89 30.67 852.33 07Mar2018 2 p.m. 50.54 5.37 27.25 828.00 07Mar2018 3 p.m. 52.34 5.82 25.50 733.75 07Mar2018 4 p.m. 53.19 3.52 24.50 591.50 07Mar2018 5 p.m. 54.00 2.85 23.75 336.50 07Mar2018 6 p.m. 53.60 3.58 22.00 100.00 07Mar2018 7 p.m. 41.72 7.38 44.00 0.00 07Mar2018 8 p.m. 41.45 6.49 43.50 0.00 07Mar2018 9 p.m. 40.46 5.44 43.67 0.00 07Mar2018 10 p.m. 38.36 6.34 51.33 0.00 07Mar2018 11 p.m. 37.04 6.38 54.75 0.00 08Mar2018 12 a.m. 34.92 3.13 58.25 0.00 08Mar2018 1 a.m. 35.15 3.19 59.00 0.00 08Mar2018 2 a.m. 33.84 1.40 62.50 0.00 08Mar2018 3 a.m. 32.18 1.71 65.33 0.00 08Mar2018 4 a.m. 31.51 0.95 74.25 0.00 08Mar2018 5 a.m. 30.47 1.68 82.50 0.00 08Mar2018 6 a.m. 27.28 2.91 83.75 0.00 08Mar2018 7 a.m. 28.31 1.34 87.50 4.00 Accuml. Values 947.99 111.13 1237.08 5836.16 Num. Valid Values 24 24 24 24 Avg. Values 39.50 4.63 51.55 243.17 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.17 178.81 51.55 501.79 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4845 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.9551 definition: TdC = TAIR_avg - ((14.55 + (0.114*TAIR_avg))*xcompl +pow((2.5 + 0.007*TAIR_avg)*xcompl, 3) + (15.9 +0.117*TAIR_avg)*pow(xcompl, 14)) del_lambda1 = 0.4678 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5322 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.4017 definition: Qn = 0.00714*SRAD_avg + 0.00000526*SRAD_avg*pow(TAIR_avg+17.8, 1.87) +0.00000394*pow(SRAD_avg, 2) - 0.00000000239*pow(SRAD_avg, 2)*pow(TAIR_avg-7.2, 2) - 1.02 es_ea = 4.0187 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.1919 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.148 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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